140521234 has 16 divisors (see below), whose sum is σ = 241420608. Its totient is φ = 60091632.

The previous prime is 140521229. The next prime is 140521253. The reversal of 140521234 is 432125041.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4209 + ... + 17284.

It is an arithmetic number, because the mean of its divisors is an integer number (15088788).

Almost surely, 2^140521234 is an apocalyptic number.

140521234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

140521234 is a deficient number, since it is larger than the sum of its proper divisors (100899374).

140521234 is a wasteful number, since it uses less digits than its factorization.

140521234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21969.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 140521234 is about 11854.1652595195. The cubic root of 140521234 is about 519.8930179324.

Adding to 140521234 its reverse (432125041), we get a palindrome (572646275).

The spelling of 140521234 in words is "one hundred forty million, five hundred twenty-one thousand, two hundred thirty-four".